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| Titel |
Observation of ozone enhancement in the lower troposphere over East Asia from a space-borne ultraviolet spectrometer |
| VerfasserIn |
S. Hayashida, X. Liu, A. Ono, K. Yang, K. Chance |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 17 ; Nr. 15, no. 17 (2015-09-02), S.9865-9881 |
| Datensatznummer |
250120011
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| Publikation (Nr.) |
 copernicus.org/acp-15-9865-2015.pdf |
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| Zusammenfassung |
| We report observations from space using ultraviolet (UV) radiance for
significant enhancement of ozone in the lower troposphere over central and
eastern China (CEC). The recent retrieval products of the Ozone Monitoring
Instrument (OMI) onboard the Earth Observing System (EOS) Aura satellite
revealed the spatial and temporal variation of ozone distributions in
multiple layers in the troposphere. We compared the OMI-derived ozone over
Beijing with airborne measurements by the Measurement of Ozone and Water
Vapor by Airbus In-Service Aircraft (MOZAIC) program. The correlation between
OMI and MOZAIC ozone in the lower troposphere was reasonable, which assured
the reliability of OMI ozone retrievals in the lower troposphere under
enhanced ozone conditions. The ozone enhancement was clearly observed over
CEC, with Shandong Province as its center, and was most notable in June in
any given year. Similar seasonal variations were observed throughout the
9-year OMI measurement period of 2005 to 2013. A considerable part of this
ozone enhancement could be attributed to the emissions of ozone precursors
from industrial activities and automobiles, and possibly from open crop
residue burning (OCRB) after the winter wheat harvest. The ozone distribution
presented in this study is also consistent with some model studies. The lower
tropospheric ozone distribution is first shown from OMI retrieval in this
study, and the results will be useful in clarifying any unknown factors that
influence ozone distribution by comparison with model simulations. |
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